/Engine/Source/Runtime/Core/Public/Internationalization/ILocalizedTextSource.h
Load the localized resources from this localized text source for the given cultures into the given maps (ELocalizationLoadFlags controls which resources should be loaded).
void LoadLocalizedResources ( const ELocalizationLoadFlags InLoadFlags, [TArrayView](API\Runtime\Core\Containers\TArrayView)< const [FString](API\Runtime\Core\Containers\FString) > InPrioritizedCultures, [FTextLocalizationResource](API\Runtime\Core\Internationalization\FTextLocalizationResource) & InOutNativeResource, [FTextLocalizationResource](API\Runtime\Core\Internationalization\FTextLocalizationResource) & InOutLocalizedResource )